M101 Pinwheel Galaxy (astrobdlbug)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5422 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · NGC 5473 · NGC 5474 · NGC 5477 · NGC 5484 · NGC 5485 · NGC 5486 · Pinwheel galaxy

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M101 Pinwheel Galaxy

Revision title: M101_HaRGB_FINAL

Powered byPixInsight

M101 Pinwheel Galaxy

Revision title: M101_HaRGB_FINAL

First image from this year's galaxy season - I only image a few galaxies as I do not have a long focal length telescope that can fully frame many of the populat targets. I do however still enjoy imaging a few of the larger galaxies and show them in a wider field context.
The first revision was taken over two nights - but only 98minutes of integration - lost quite a number due to tracking issues and clouds, in addition I had major crashes with astroberry that cut short the second night session, frustating as it was night of new moon and crystal clear all night - but that's astro imaging - wait 7 weeks to get a clear night and the equipment has a melt down.....
I moved over to N.I.N.A for the second revision, had unexpected clear session from midnight through to 3:30am, so the second is now a combined 4h 14minute image from all sessions.

M101 - NASA info:
The giant spiral disk of stars, dust and gas is 170,000 light-years across — nearly twice the diameter of our galaxy, the Milky Way. M101 is estimated to contain at least one trillion stars.
Pierre Méchain, one of Charles Messier’s colleagues, discovered the Pinwheel galaxy in 1781.
The galaxy is located 25 million light-years away from Earth in the constellation Ursa Major
M101 has an apparent magnitude of 7.9

Original
D
Final
F

F

Title: M101_HaRGB_FINAL

Description: Added 3hrs of Ha data to previous OSC RGB version

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	7644981
PixInsight job	RE2YZT8KVF11X6HNI93PDW2T62USI1L9
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m18s.46
RA (top/left)	13h59m36s.40
RA (top/right)	13h59m09s.12
RA (bottom/right)	14h06m51s.41
RA (bottom/left)	14h07m38s.84

Dec (center)	+54°20′25″.0
Dec (top/left)	+55°14′29″.0
Dec (top/right)	+53°29′27″.2
Dec (bottom/right)	+53°25′57″.1
Dec (bottom/left)	+55°10′50″.5

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M101 Pinwheel Galaxy

Revision title: M101_HaRGB_FINAL

M101 Pinwheel Galaxy

Revision title: M101_HaRGB_FINAL

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M101 Pinwheel Galaxy

Revision title: M101_HaRGB_FINAL

M101 Pinwheel Galaxy

Revision title: M101_HaRGB_FINAL

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